Abstract
We propose a method to prepare different non-Poissonian signal pulses from sources of Poissonian photon number distribution, using only linear optical elements and threshold photon detectors. This method allows a simple passive preparation of decoy states for quantum key distribution. We show that the resulting key rates are comparable with the performance of active choices of intensities of Poissonian signals.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Yang Zhang, Wei Chen, Shuang Wang, Zhen-Qiang Yin, Fang-Xing Xu, Xiao-Wei Wu, Chun-Hua Dong, Hong-Wei Li, Guang-Can Guo, and Zheng-Fu Han
Opt. Lett. 35(20) 3393-3395 (2010)
Huaixiu Zheng, Daniel J. Gauthier, and Harold U. Baranger
Opt. Lett. 38(5) 622-624 (2013)
Kang Liu, Jie Wei, Chun-Mei Zhang, and Qin Wang
J. Opt. Soc. Am. B 35(5) 1066-1071 (2018)